On 18/02/2025 10:21, Nas Chung wrote:

For example:
vpu: video-codec@4c480000 {
        compatible = "nxp,imx95-vpu";
        reg = <0x0 0x4c480000 0x0 0x50000>;
	ranges = <0x0 0x0 0x4c480000 0x50000>;

        vpuctrl: vpu-ctrl@40000 {
          compatible = "nxp,imx95-vpu-ctrl";
	  reg = <0x40000 0x10000>;
        };

        vpucore0: vpu-core@00000 {
          compatible = "nxp,imx95-vpu-core";
          reg = <0x00000 0x10000>;
        };

        vpucore1: vpu-core@10000 {
          compatible = "nxp,imx95-vpu-core";
          reg = <0x10000 0x10000>;
        };

        vpucore2: vpu-core@20000 {
          compatible = "nxp,imx95-vpu-core";
          reg = <0x20000 0x10000>;
        };

        vpucore3: vpu-core@30000 {
          compatible = "nxp,imx95-vpu-core";

Why do you need compatible here? Could it be anything else?

          reg = <0x30000 0x10000>;

Where is the rest of resources? You created children only for one
resource - address space?

Best regards,
Krzysztof